package string;

public class MatchesDemo {
    public static void main(String[] args) {
        /**
         * 邮箱正则表达式:
         * [a-zA-Z0-9_]+@[a-zA-Z0-9]+(\.[a-zA-Z]+)+
         */
        String email="zhongyadong@asd.cn";
        String regex="[a-zA-Z0-9_]+@[a-zA-Z0-9]+(\\.[a-zA-Z]+)+";

        boolean match=email.matches(regex);
        if (match){
            System.out.println("是正确的邮箱格式");
        }else {
            System.out.println("不是正确的邮箱格式");
        }
    }
}